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K-Patents Process Refractometer PR-23 meets the pharmaceutical industry standards and guidelines. These include PAT, GMP, CIP/SIP, 21 CFR Part 11 and validation. The ability to understand and continuously control Refractive Index nD contributes significantly to the development of effective drugs and efficient manufacturing processes.

K-Patents Pharma Refractometer PR-23-AC fulfills the pharmaceutical drug production regulations for process wetted part materials, sealing, and surface roughness. No animal originated media are used in the machining and polishing processes.

Each sensor is provided with a calibration certificate comparing a set of standard liquids to the actual sensor output. Therefore, the calibration and accuracy can be routinely verified with the traceable standard Refractive Index liquids.

Validation often includes the qualification of systems and equipment. It is a requirement for Good Manufacturing Practices (GMPs) and other regulatory requirements. K-Patents provides a validation procedure and equipment that help the user to prove the suitability of the refractometer for its designated function. These include an optional laboratory test cuvette for easy off-line testing of drug samples in the laboratory.
Features
  • Universal calibration of each sensor: All sensors are freely interchangeable.
  • Full measurement range Refractive Index (nD) 1.3200 - 1.5300, which corresponds to 0-100 Brix/Conc.
  • Meets 3A Sanitary Standard and tested for CIP cleanability according to EHEDG.
  • Withstands CIP cleaning.
  • Completely digital system: particles and bubbles do not affect operation or accuracy.
  • Patented CORE-optics: no drift, no re-calibration, no mechanical adjustments.
  • Includes an Ethernet communication solution for data-logging. Together with the user's own procedural and administrative user controls this facilitates electronic data records for FDA 21 CFR Part 11 adherence.
  • Effective heat transfer and isolation using Teflon® and ceramics in the sensor provide safe operation also in higher process temperatures (max. 130° C (266° F)
  • Fast process temperature measurement by built-in Pt1000 and automatic temperature compensation.
  • Calibration and accuracy traceability with easy on-site instrument verification using standard Refractive Index liquids.
  • ATEX approved for Zone II, area classification EX II 3 G EEx nA II T4.
  • ATEX approved for Zones 0 and 1, area classification ATEX II 1G Ex ia IIC T4 (only Intrinsically safe PR-23-AC-IA with single sensor transmitter STR).
  • FM approved for Class I, Div. 2, Groups A, B, C and D, T6.
  • CSA certified for Class I, Div. 2, Groups A, B, C and D, T4.
  • cCSAus certified for Electrical Safety, Sensor: Class I, Pollution Deg. 3; Transmitter: Class I, Pollution Deg. 2; Installation Cat. II.

Specifications

Accuracy

  • Refractive Index ND ± 0.0002 (Corresponds Typically to ± 0.1 % by Weight)

Alarms / Wash Relays

  • Two Built-In Signal Relays, Max.

Ambient Temperature Range

  • Indicating Transmitter: 0° to 50° C (32° to 122° F)
  • Sensor: -20° to 45° C (-4° to 113° F) - Max.

Calibration

  • With Cargille Standard R.I. Liquids over Full Range of ND 1.3200 to 1.5300

Core-Optics

  • No Mechanical Adjustments (US Patent No. US6067151)

Current Output

  • Indicating Transmitter DTR: 4-20 mA - Max.
  • Indicating Transmitter DTR: Galvanic Isolation 1,500 Vdc or AC (Peak), Hold Function During Prism Wash

Digital Measurement

  • 3648 Pixel CCD Element

Display

  • Indicating Transmitter DTR: 320 x 240 Pixel Graphical LCD with LED Backlight

Enclosure Material

  • AISI 316L Stainless Steel

Ethernet Connection

  • 10/100 Mbit/second, Data Acquisition over UDP/IP Protocol with K-Patents Data Logging Software

Instrument Verification

  • According to ISO 9000 Quality System: NIST Traceable with Standard R.I. Liquids & Transmitter's Menu Guided Procedure & Report for Printing

Interconnecting Cable

  • IEC 61158-2 Compliant 2-Wire Cable

Interconnecting Cable Length

  • 33 feet (10 metres) Standard
  • Maximum

Keypad

  • Indicating Transmitter DTR: 18 Membrane Keys

Laboratory Test Cuvette LTC

  • AISI 316L Stainless Steel Laboratory Test Cuvette for Manual & Static Sampling. Contains an Agitator with PTFE (Teflon) Stirrer, & Connections for Sample Inlet & Outlet, & 1/4” Tube Connections for Thermostat Controlled Water.

Light Source

  • Light Emitting Diode (LED), 589 Nm Wavelength, Sodium D-Line

Pharma Mini Flow Cell PMFC

  • For In-Line Testing of Low Volume Samples in Pilot Conditions, Process Connection Sanitary 3A-Clamp 1,5”, Electro-Polished Wetted Parts Material with Surface Roughness of Ra 0.4 μm (15 μ inch)

Power

  • Indicating Transmitter DTR: 24 Vdc, 30 VA
  • Indicating Transmitter DTR: AC Input 100-240 Vac, 50/60 Hz

Process Connection

  • Sanitary 3A-Clamp 2.5”

Process Temperature

  • -20° to 130° C (-4° to 266° F)

Process Wetted Parts (Standard)

  • AISI 316L Stainless Steel
  • EPDM
  • Prism Gaskets PTFE (Teflon)
  • Prism Spinel

Refractive Index Range

  • Standard: Full Range, ND=1.3200 to 1.5300 (Corresponds to 0 to 100 % by Weight)

Repeatability

  • nD = ± 0.0001 (Corresponds Typically to ± 0.05 % by Weight)

Sensor Connectivity

  • One or Two Sensors can be connected to One DTR

Sensor Protection Class

  • IP67
  • NEMA 4X

Speed of Response

  • 1 second Undamped, Damping Time Selectable up to 5 minutes

Surface Roughness

  • Ra 0.4 μm (15 μ inch), Optional

Temperature Compensation

  • Automatic, Digital Compensation

Temperature Sensor

  • Built-In Pt-1000, Linearization According to IEC 751

Transmitter Protection Class

  • IP66 (Indoor Use)
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